CYUSB3324-88LTXI

Application Specific Microcontrollers Overview

The Infineon CYUSB3324-88LTXI is a USB 3.2 Gen 1 hub controller compliant with the USB 3.0 specification revision 1.0, supporting data rates up to 5 Gbps on all ports. It integrates an ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and firmware management. The device features four downstream (DS) ports, each capable of SuperSpeed, High-Speed, Full-Speed, and Low-Speed operation. Key proprietary features include shared link capability for embedded applications and ghost charging support. It operates within an industrial temperature range of -40°C to +85°C and utilizes an 88-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Supports up to four USB 3.0-compliant downstream ports with 5 Gbps SuperSpeed capability
• Integrated ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for configuration and control
• Proprietary shared link feature enabling simultaneous connection of embedded SS and removable USB 2.0 devices
• Enhanced battery charging compliance with USB BC v1.2 and Apple charging support

Application Specific Microcontrollers Applications

• Standalone hubs
• PC and tablet motherboards
• Docking stations
• Hand-held cradles
• Monitors and digital TVs

Application Specific Microcontrollers Procurement Notes

Verify the ordering suffix 'I' corresponds to the industrial temperature grade (-40°C to +85°C) as specified in the datasheet's ordering information section. Confirm that the 88-pin QFN package dimensions match the target PCB footprint requirements. Ensure compatibility with the required I2C interface configuration for EEPROM or master communication if used.

Application Specific Microcontrollers Selection Notes

Select this model when four downstream ports are required with SuperSpeed capabilities. The CYUSB3324 supports individual power switch control for DS ports, unlike ganged configurations found in other variants. Consider the shared link feature if embedding SS devices alongside standard USB 2.0 peripherals. Verify that the application requires the industrial temperature range covered by the 'I' suffix.

Application Specific Microcontrollers Part Context

The CYUSB3324 belongs to the EZ-USB HX3 family of USB 3.2 Gen 1 hub controllers. This family includes variants with different port counts and features, such as the CYUSB3302 (2-port), CYUSB3312 (2-port), and CYUSB3328 (8-port). The CYUSB3324 specifically offers four DS ports with individual power control and pin-strap configuration support, distinguishing it from the CYUSB330x series which lacks pin-straps.

Application Specific Microcontrollers Replacement Considerations

Direct substitutes within the same package and feature set are limited. The CYUSB3324-88LTXC shares the same electrical characteristics but may differ in temperature rating or configuration options. Cross-family replacements like the CYUSB3328 offer more ports but require different software and hardware adjustments.